﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Geodatabase;
using Akiha.Core;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.DataSourcesGDB;
using System.Runtime.InteropServices;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.esriSystem;




namespace ArcMap_AddIn_Tools.Core.AOWrapper
{
    public static class FeatureLayerWrapper
    {
        //创建内存要素图层
        public static IFeatureLayer CreateFeatureLayerInmemeory(string DataSetName, string AliaseName, ISpatialReference SpatialRef, esriGeometryType GeometryType, IFields PropertyFields)
        {
            IWorkspaceFactory workspaceFactory = new InMemoryWorkspaceFactoryClass();
            ESRI.ArcGIS.Geodatabase.IWorkspaceName workspaceName = workspaceFactory.Create("", "MyWorkspace", null, 0);
            ESRI.ArcGIS.esriSystem.IName name = (IName)workspaceName;
            ESRI.ArcGIS.Geodatabase.IWorkspace inmemWor = (IWorkspace)name.Open();

            IField oField = new FieldClass();
            IFields oFields = new FieldsClass();
            IFieldsEdit oFieldsEdit = null;
            IFieldEdit oFieldEdit = null;
            IFeatureClass oFeatureClass = null;
            IFeatureLayer oFeatureLayer = null;

            try
            {
                oFieldsEdit = oFields as IFieldsEdit;
                oFieldEdit = oField as IFieldEdit;

                for (int i = 0; i < PropertyFields.FieldCount; i++)
                {
                    oFieldsEdit.AddField(PropertyFields.get_Field(i));
                }

                IGeometryDef geometryDef = new GeometryDefClass();
                IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef;
                geometryDefEdit.AvgNumPoints_2 = 5;
                geometryDefEdit.GeometryType_2 = GeometryType;
                geometryDefEdit.GridCount_2 = 1;
                geometryDefEdit.HasM_2 = false;
                geometryDefEdit.HasZ_2 = false;
                geometryDefEdit.SpatialReference_2 = SpatialRef;

                oFieldEdit.Name_2 = "SHAPE";
                oFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
                oFieldEdit.GeometryDef_2 = geometryDef;
                oFieldEdit.IsNullable_2 = true;
                oFieldEdit.Required_2 = true;
                oFieldsEdit.AddField(oField);

                oFeatureClass = (inmemWor as IFeatureWorkspace).CreateFeatureClass(DataSetName, oFields, null, null, esriFeatureType.esriFTSimple, "SHAPE", "");
                (oFeatureClass as IDataset).BrowseName = DataSetName;

                oFeatureLayer = new FeatureLayerClass();
                oFeatureLayer.Name = AliaseName;
                oFeatureLayer.FeatureClass = oFeatureClass;
            }
            catch
            {
            }
            finally
            {
                try
                {
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oField);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oFields);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oFieldsEdit);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oFieldEdit);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(name);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(workspaceFactory);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(workspaceName);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(inmemWor);
                    System.Runtime.InteropServices.Marshal.ReleaseComObject(oFeatureClass);
                }
                catch { }

                GC.Collect();
            }
            return oFeatureLayer;
        }



    }
}
